CN101483889A - Method and apparatus for paging user - Google Patents

Abstract

The invention discloses a method for paging a user, which comprises the following steps: a paging request is generated by an evolutionary mobile switching center eMSC; the eMSC is confirmed to send the paging request to at least one of the following networks and carry out paging to the user, and the networks include an evolutionary packet-switched EPS network and a legacy packet-switched Legacy EPS network. The invention discloses a device for paging the user. In the invention, no matter the user is on the EPS network or the Legacy EPS network and no matter a network side is provided with circuit switched domain service or data service; the user can be paged and served. If the EPS network does not support the circuit switched domain service, the user returns to the Legacy EPS network to response the paging, thus achieving the aim of paging the user.

Description

A kind of method of calling user and device

Technical field

The present invention relates to the mobile communication technology field, particularly relate to a kind of method and device of calling user.

Background technology

Present 3GPP (Third Generation Partnership Project, third generation partnership relation) in the network, each the active research LTE of manufacturer (Long Term Evolved, long-term evolving network)/SAE (System Architecture Evolved, the System Architecture Evolution network), main purpose of its research and development LTE is that the network cheaply that can reduce time delay in order to provide a kind of, improve user data rate, improved power system capacity and covering uses PS (packet switch, packet-switched domain) professional (promptly be used for realizing IP operation).

As shown in Figure 1, be prior art radio gradual network structure figure, the core net of wireless evolution network mainly comprises MME (Mobility Management Entity, Mobility Management Entity), Serving SAEGateway, three logic function bodies of PDN SAE Gateway, MME wherein is a mobile management entity, being responsible for NAS signaling and NAS signaling encrypts and roams, functions such as tracking, distributing user temporary identity sign, safety function etc., it is corresponding to current UMTS (Universal Mobile TelecommunicationSystem, the universal mobile telecommunications system system) the control plane part of inner SGSN (Serving GPRS Support Node, service GPRS node).Serving Gateway is responsible for the local mobility anchor point and the mobility anchor point and the Lawful Interception relevant information of 3GPP internal system; PDN Gateway then is responsible for strategy execution and charging and Lawful Interception correlation function.

In order to use traditional CS (circuit domain) professional (speech business) behind the packet network of having disposed evolution in operator, on the standard CSoPS (CS Domain Services over evolved PSaccess has been proposed at present, the CS service covers evolution PS territory) this research project, in order to use traditional CS business to propose two cover solutions: a solution is that the packet network of evolution is not supported the CS speech business, and the user can utilize traditional 2G (second generation communication)/3G (third generation communication) to carry out the CS business; Herein, the implication of 2G/3G is 2G or 3G, and 2G/3G all is meant this implication among the present invention, hereinafter is described no longer one by one.Another kind is the packet network access CS domain core net by evolution, finishes the CS business based on EPS (the EPS network is pure PS territory) network.For preceding a kind of solution, a kind of typical processing method is to connect by the Z2 interface between MME and MSC at present, finish the function of similar Gs interface, be exactly specifically when needs carry out the CS business, MSC (Mobile Switching Center, mobile switching centre) sends the paging request by Z2 interface and MME to UE (User Equipment, subscriber equipment), UE forwards the 2G/3G network to and carries out page response, and finishes follow-up business and handle.For a kind of solution in back, the CS business is finished by the EPS network, therefore after UE receives the paging request of network transmission, directly finishes page response at the EPS network, and carries out follow-up business and handle.

As shown in Figure 2, for prior art CSoPS system architecture diagram, under this network system architecture, network side still is EPS network response paging according to network function deployment scenario decision UE at Legacy EPS network.Herein, Legacy EPS network is meant legacy network, promptly can refer to 2G or 3G network, and Legacy EPS network all is these implications among the present invention, is described no longer one by one below.Speech business has taken place if be in the user of the EPS network coverage, but EPS network support voice business not, and network side can indicate the user to return Legacy EPS network response paging in calling user; If instead EPS network support voice CS class business, then the user directly gets final product in EPS network response paging.

As shown in Figure 3, flow chart for the calling called subscriber in the 2G/3G network of user in the prior art, in the existing 2G/3G network, the interface of SGSN and MSC is a Gs interface, the user adopts the method for combined registering self to be registered among SGSN and the MSC when registration, and SGSN and MSC have set up the Gs interface contact simultaneously.When circuit domain had the paging request, if there is Gs interface in the MSC judgement then indicates SGSN calling user in the PS territory, the user can judge this paging request from circuit domain according to the source of paging request, and then UE gets back to circuit domain and receives the CS business.In the prior art, the user can be registered to CS network and PS network simultaneously, and during this user of CS paging, concrete steps are as follows as the user:

Step S301, MSC sends to SGSN with paging Paging by Gs interface, comprises (TMSI or IMSI, location information) in the message.

Step S302, SGSN send RANAP message Paging to each related RNS (Area, TMSI, CN Domain indicator).

Step S303, the RNS lateral root is according to TMSI and Area calling user.

After step S304～step S305, user receive the paging request, find by CN domain Indicator that this request is satisfied in CS territory page-response message from the CS territory and give MSC.

In realizing embodiment of the invention process, find that there are the following problems at least in the prior art: in the prior art, when if the circuit domain business of Mobile terminating call has taken place in the EPS network or the user when the EPS network can not be realized circuit domain business, can't realize that paging arrives the user, for the user realizes circuit domain business.

Summary of the invention

The embodiment of the invention will propose a kind of method and device of calling user, under the different network systems framework, even the user at the EPS network, no matter network side has circuit domain business or data service, also can paging serves to the user and for the user.

For achieving the above object, the embodiment of the invention provides a kind of method of calling user, may further comprise the steps:

The eMSC of mobile switching centre of evolution generates the paging request;

Definite described paging request is issued at least of described eMSC carried out paging as one of lower network and to the user: the packet domain Legacy EPS network of the packet domain EPS network of evolution and succession.

The embodiment of the invention provides a kind of eMSC, comprising:

Paging request generation unit is used to generate the paging request, comprises the network indication information element in the described paging request, is used for indicating described subscriber equipment still to return page response at Legacy EPS network at the EPS network;

The paging determining unit is used for determining described paging request is issued at least as one of lower network: the packet domain Legacy EPS network of the packet domain EPS network of evolution and succession;

Paging unit is used for the user of described network is carried out paging.

The embodiment of the invention provides a kind of MME, comprising:

Judging unit is used to judge that subscriber equipment is in idle Idle state or activates the Active state;

Paging unit is used for when subscriber equipment is in idle Idle state, and MME comes calling user with the paging request that receives by all subscriber equipmenies that eNodeB sends in the Acceditation Area; When subscriber equipment was in activation Active state, MME came calling user by sending non access stratum NAS message to UE.

The technical scheme of the embodiment of the invention has the following advantages, and no matter the user is at the EPS network or at Legacy EPS network, and no matter network side has circuit domain business or data service, can paging also be user's service to the user.If the EPS network is not supported circuit domain business, allow the user return Legacy EPS network response paging, thereby reach the purpose of calling user.

Description of drawings

Fig. 1 is prior art radio gradual network structure figure;

Fig. 2 is a prior art CSoPS system architecture diagram;

Fig. 3 be in the prior art in the 2G/3G network flow chart of paging;

Fig. 4 is that the embodiment of the invention one is passed through associating Z2 interface EPS ICQ user, and the user is at the flow chart of 2G/3G network response paging;

Fig. 5 is that the embodiment of the invention two is passed through associating Z2 interface EPS ICQ user, and the user is at the flow chart of EPS network response paging;

Fig. 6 does not unite the Z2 interface EPS ICQ user for the embodiment of the invention three, and the user is at the flow chart of EPS network response paging;

Fig. 7 does not unite the Z2 interface EPS ICQ user for the embodiment of the invention four, and the user is at the flow chart of 2G/3G network response paging;

Fig. 8 is that the embodiment of the invention five is at EPS network and Legacy EPS while calling user flow chart;

Fig. 9 is the embodiment of the invention six at EPS network and Legacy EPS calling user simultaneously, does not have the paging flow chart of Gs interface;

Figure 10 is the embodiment of the invention seven at EPS network and Legacy EPS calling user simultaneously, has the paging flow chart of Gs interface;

Figure 11 is the embodiment of the invention eight, and the user is in the 2G network that does not have the PS covering, and has data distributing to give the user, and MME indication user is echoed at the EPS network and answered the paging flow chart.

Figure 12 is an eMSC structure chart in the embodiment of the invention;

Figure 13 is a MME structure chart in the embodiment of the invention.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:

As shown in Figure 4, for the embodiment of the invention one paging request is passed through the Z2 interface EPS ICQ user with means of signaling, indication UE sends it back the flow chart of page response at the 2G/3G network, in the present embodiment, the user is in the scope that SNA covers, carry out the CS speech business and exhale flow process eventually, if the paging request sends with the form of signaling, eMSC (evolved MSC at first, the MSC of evolution) informs that by the Z2 interface MME is EPS ICQ user, in the paging request that eMSC sends, beep-page message by signaling CN Domain indicator or Paging Cause (this two classes cell also belongs to the scope of network indication information element) indication user equipment (UE) at the CS territory page-response message of 2G/3G or indication user equipment (UE) at EPS ICQ response message, this message sends to user equipment (UE) by MME, judgement sends page response in the CS territory of 2G/3G, still carry the decision of network indication information element in foundation that the EPS network sends page response by the paging request, promptly MME can indicate UE to send page response in the CS territory by this network indication information element message informing eNodeB and still send page response at the EPS network.After eMSC received that the CS speech business is exhaled indication eventually, eMSC followed HLR to obtain called subscriber's roaming number alternately, and to the called subscriber, concrete steps are as follows by this number route paging:

Step S401, eMSC is known and is had the Z2 interface, then sends Paging message calling user by the Z2 interface to the MME of EPS network according to roaming number, can comprise the reason of Paging in the paging request, carry out speech business such as needs, perhaps carry out CS class business such as short message.Cell that carries in the paging request such as IMSI, VLR TMSI, positional information and paging reason etc. are referred to as the network indication information element.

Step S402, after MME receives the paging request of sending from the Z2 interface, in the lane place scope of UE registration, carry out the EPS paging, promptly send the paging request to eNodeB, carry the network indication information element in the paging request, the network indication information element can comprise paging reason or network domains indication, wherein paging reason can be represented the cause of paging, the architected features indication information element that can also comprise CSoPS in this outer network indication information element, for example the paging request is to finish CS business etc. for the method that adopts similar Gs interface.ENodeB sends to UE by eating dishes without rice or wine with message after receiving the paging request.If the active user is in activated state in the EPS network, MME can also adopt other mechanism to notify UE to carry out follow-up CS business, a kind of typical method is that the signaling that MME utilizes the UE of activated state to have connects the professional message that triggers to NAS of UE transmission, the network indication information element that comprises traffic performance in this message, this network indication information element specifically can be similar with paging reason, network domains indication and CSoPS architected features etc. that the network indication information element that carries in the above-mentioned paging request all comprises, and UE finishes follow-up page response and Business Processing after receiving the paging request.The network indication information element can be indicated the user to send page response in the CS territory of 2G, 3G network and still be sent page response at the EPS network.Be example to send page response in the present embodiment at 2G, 3G network.

Step S403, user are when idle (Idle state), and MME comes calling user with the paging request message of receiving by all user equipment (UE)s that eNodeB sends in the Acceditation Area.

Step S404, after user equipment (UE) receives that the paging request of eNodeB transmission or the NAS message paging that eNodeB transmits are indicated, check the network indication information element that carries in the paging request, when CS business such as the former because speech business of the paging in the network indication information element, short message service or when network domains was designated as CS territory or CSoPS architected features and is similar Gs interface, the network indication information element was indicated UE to forward the 2G/3G network to and finished paging.Be that user equipment (UE) sends page response to BSC (Base Station Control, base station controller)/RNC (Radio Network Control, radio network controller).Herein, the implication of BSC/RNC is meant BSC or RNC, and BSC/RNC all is meant this implication among the present invention, hereinafter is described no longer one by one.

Step S405, BSC/RNC transmits page response to eMSC.

If carrying distinctive message, the network indication information element in the paging request do not indicate user EPS network to send page response, then user UE gets final product with regard to only finishing page response at the 2G/3G network, wherein the network indication information element indication user foundation that needs to carry out page response in the sort of network is decided by network attribute at that time, as need in the EPS network page response shown in embodiment two.

In the embodiment of the invention, by associating Z2 interface calling user in the EPS network, the user responds calling user in Legacy EPS network, makes no matter network side has circuit domain business or data service, can paging also be user's service to the user.If the EPS network is not supported circuit domain business, allow the user return legacy EPS network response paging, thereby reach the purpose of calling user.

As shown in Figure 5, for the embodiment of the invention two sends the page response flow chart by Z2 interface paging user and in the EPS network, be example with user equipment (UE) request CS service request in the present embodiment, if user equipment (UE) carries out the CS speech business in the EPS network coverage, and the user is in activated state, and then user equipment (UE) need not switchback Legacy EPS network and sends page response.So when the user CS voice take place under the EPS network coverage was eventually exhaled flow process, this user directly carried out the CS speech business at the EPS network and gets final product.Initiate paging when eMSC unites interface Z2 with the paging request with the form of signaling, the user sends page response at the EPS network, indicates the user to respond paging in the EPS network by the network indication information element that carries in the paging request.Concrete steps are as follows:

Step S501, eMSC passes through Z2 interface paging user, and according to the network function deployment scenario, gives birth to the speech business of CS class by the network indication information element indication user equipment (UE) that carries in the paging request at EPS ICQ response concurrent.

When user equipment (UE) has the CS speech business to take place, eMSC is known and is had the Z2 interface, then send the message calling user that carries the network indication information element by the Z2 interface to the MME of EPS network according to roaming number, carry the network indication information element in this paging request), can carry IMSI, VLR TMSI, positional information and paging reason in the network indication information element, carry out the speech business of CS class such as needs, perhaps carry out short message service etc.

Step S502, if the user is in Idle idle condition (idle condition can refer to that the user follows the connection of core-network side to disconnect), MME passes through the eNodeB calling user, and responds in the EPS ICQ by the network indication information element indication UE that carries in the paging request.

Step S503 sends to user equipment (UE) with paging request message after the paging request message of eNodeB in receiving step S502.

Step S504, UE initiation Service Request flow process is set up wireless connections and is connected with S1, and so far signaling packet and packet can transmit by the carrying that recovers.

The main purpose of Service Request flow process is when core net is not connected with user equipment (UE) (as idle condition), connects by this flow process, makes network side data can be handed down to the user, and the user also can upload data to network side.

Step S505, user equipment (UE) sends to eNodeB with the form that beep-page message is packaged into packet by data surface.

Step S506, eNodeB sends to PGW (PDN Gateway, PDN Gateway) with this page response by SGW (ServiceGateway, gateway) by data surface.

Step S507, PGW sends to eMSC with this packet page response.

Step S508, the user is in Idle idle condition following time, and page response sends to eMSC by the signaling ways of connecting by MME, user equipment (UE) and eNodeB, the signaling between eNodeB and MME is connected in the Service Request flow process and sets up.

When subscriber equipment is in the Idle state at the EPS network, all need being connected of user's face and signaling plane subscriber equipment to initiate Service Request flow process and realize, thereby realize page response is sent to network equipment or page response is sent to network equipment with the form of packet by user's face by the associating interface with the form of signaling.

The method that step S505, S506, S508 (method two) and step S505-S507 (method one) describe is independent, is the method for two kinds of different page responses.The flow process identical (sending page response) of step S508 flow process and step S510 with signaling method, be that the path that user equipment (UE) passes through UE～eNodeB～MME～eMSC sends page response, eNodeB is connected by setting up in Service Request flow process with signaling between MME.

Step S509, when user equipment (UE) is in the Active state of activation, after MME receives the paging request, learn that by the network indication information element that carries in the paging request this network indication information element indication user is in EPS network response paging, then directly by the Z2 interface page response is sent to user equipment (UE), MME directly sends page response to eMSC then.

Return in the paging request the user, user equipment (UE) can send page response (the network indication information element can be indicated user's page response in network therein) at the 2G/3G network or in the EPS network, in the present embodiment, needing to carry out page response in the EPS network with the user is example, if the indication user equipment (UE) is in 2G/3G network response paging in the paging request, then network side carries out subsequent treatment according to method among the embodiment one.

Step S510, if when user equipment (UE) is in activated state, in this step, the Active state of activation specifically can be represented but not be included as user equipment (UE) and core-network side connects.MME adopts means of signaling calling user (mode of step S502 and step S503), after user equipment (UE) is received signaling paging request, and the network indication information element that carries in this paging request indication user need send page response at the EPS network, subscriber equipment sends to PGW with the form that page response is packaged into packet by SGW, sends to network equipment by PGW again.

Step S511, when if user equipment (UE) is in activated state, MME adopts means of signaling calling user (mode of step S502 and step S503), subscriber equipment sends to network equipment with the signaling page response by MME with the signaling ways of connecting, after user equipment (UE) is received this signaling paging request, the network indication information element that carries in this signaling paging request indication user equipment (UE) sends page response at the EPS network, and user equipment (UE) sends to eMSC by data surface via eNodeB, SGW, PGW with the form of packet with page response.

In the present embodiment, step S510 and step S511 are two kinds of transmission meanss, if select wherein a kind of step, so remaining another one step can not occur.

In the embodiment of the invention, by associating Z2 interface calling user in the EPS network, the user responds calling user in the EPS network, makes no matter network side has circuit domain business or data service, can paging also be user's service to the user.If the EPS network is not supported circuit domain business, allow the user return legacyEPS network response paging, thereby reach the purpose of calling user.As shown in Figure 6, for the embodiment of the invention three eMSC do not pass through associating Z2 interface paging user, user equipment (UE) is at EPS network response paging flow chart, do not adopt the Z2 interface to carry out the transmission and the calling user of data signaling between present embodiment and embodiment one, two different eMSC of being and MME, at this moment eMSC sends to the form of paging request with packet on the SGW by PGW, and concrete steps are as follows:

Step S601, eMSC sends to SGW with the form that signaling paging request is packaged into packet by PGW by IP tunnel, SGW sends to subscriber equipment with the paging request, come calling user, include the network indication information element in the paging request, network indication information element indication user sends page response (also can indicate user equipment (UE) to send page response at 2G/3G) at the EPS network, the network indication information element can also comprise the reason of Paging, go back portability in this paging request and carry out speech business (CS class business), perhaps carry out information such as short message service just like needs.

Step S602, if user equipment (UE) is in the Idle state in the EPS network, the SGW equipment of the core network sends to MME with described packet paging request by the downlink data indication information, and the network indication information element indication MME that carries in the paging request passes through the MME calling user at the EPS network.

Step S603, MME sends to eNodeB with previous I P paging request, come calling user by eNodeB, the network indication information element that carries in this message can comprise paging reason or network domains indication, and this outer network indication information element can also comprise the architected features indication of CSoPS etc.

Step S604, eNodeB sends this paging request by the signaling connection to all user equipment (UE)s of registering in the eNodeB coverage.

Step S605, UE initiation Service Request flow process is set up wireless connections and is connected with S1, and so far by this Service Request flow process, signaling packet that the paging request is carried and packet can transmit by the carrying that recovers.

Step S606, the user responds paging.Among this method and the embodiment two user to respond the method for paging under the Idle state identical, user equipment (UE) can send page response with the form of signaling and send page response from data surface to eMSC to eMSC or with the form of packet.

In sending it back the process of page response, if the user is in Idle state, then need to set up Service Request flow process, signaling, the packet set up between MME, eNodeB, the eMSC by this flow process connect.When UE receives this paging request, judge that by the network indication information element this user equipment (UE) need send page response at the EPS network, then page response is sent to eMSC or with the form of packet page response sent to eMSC by data surface via eNodeB, SGW, PGW by eNodeB, MME with the signaling ways of connecting.

Step S607, if user equipment (UE) is in the Active state, user equipment (UE) sends to eNodB with the form that the paging request is packaged into packet by data surface,

In the present embodiment, owing to there is not the Z2 interface, so just can not directly this paging request be sent to UE by the Z2 interface.Select in this step by data surface packet paging request to be sent to user equipment (UE), SGW directly sends the paging request to user equipment (UE) by data surface through eNodeB, carries the network indication information element in the packet paging request.

Step S608, eNodeB sends to user equipment (UE) by data surface with this paging request, this page response carries network indication information element indication user and send page response in the EPS network).

Step S609, user equipment (UE) sends to PGW with this packet page response by SGW by the eNodeB data surface, and PGW sends to page response to eMSC (network indication information element indication user equipment (UE) sends page response in the EPS network).

Wherein, the method of the response paging of mentioning among the method for step S609 and the embodiment two step S505～S507 is identical, eNodeB sends to PGW with this page response by SGW by data surface, PGW sends to eMSC with this page response, owing to carry the indication user equipment (UE) sends page response at the EPS network network indication information element in the paging request, so user equipment (UE) also can indicate user equipment (UE) to send page response at the 2G/3G network in EPS network response paging.

In the embodiment of the invention, not existing under the situation of Z2 interface, by calling user in the EPS network, make no matter network side has circuit domain business or data service, can paging also be user's service to the user.If the EPS network is not supported circuit domain business, allow the user return legacy EPS network response paging, thereby reach the purpose of calling user.As shown in Figure 7, for the embodiment of the invention four is not passed through Z2 interface paging user, user equipment (UE) sends the page response flow chart in the 2G/3G network, if eMSC does not pass through associating Z2 interface EPS ICQ user, then eMSC sends to SGW with the form that the paging request is packaged into packet by PGW, SGW sends to subscriber equipment with the paging request then, does different pagings according to user equipment (UE) at the different conditions of EPS network and handles, and concrete steps are as follows:

Step S701, eMSC sends to SGW with the form that the paging request is packaged into packet by PGW by IP tunnel, SGW sends to subscriber equipment with the paging request, come calling user, can carry the indication user equipment (UE) in this packet paging request (also can indicate user equipment (UE) to send page response at the EPS network at 2G/3G network transmission page response network indication information element, present embodiment is the 2G/3G network), the network indication information element can also comprise the reason of Paging, carry out speech business (CS class business) such as needs, perhaps carry out short message service etc.

Step S702, if the user is under the Idle idle condition, eMSC comes calling user with the form that the paging request is packaged into packet by MME.

Step S703, MME sends to eNodeB with this packet paging request, come calling user by eNodeB, the network indication information element that carries in this message can comprise paging reason or network domains indication, can also comprise the architected features indication of CSoPS etc. in addition in this network indication information element.

Step S704, eNodeB send the paging request for all user equipment (UE)s registered in the coverage.

Step S705, user equipment (UE) learns that according to the network indication information element that carries in the paging request needs send page response at the 2G/3G network, this step is identical with step S404 among the embodiment one.Be that user equipment (UE) sends page response to BSC/RNC.

Step S706, BSC/RNC transmits this page response to eMSC.

Step S707, if the user is under the Active state, eMSC directly sends to eNodeB by data surface with this paging request with the form that the paging request is packaged into packet.

Step S708, eNodeB sends to the user equipment (UE) that all were registered at eNodeB with this packet paging request, carries the network indication information element in this paging request.

Step S709, user equipment (UE) learn by the network indication information element that carries in the paging request and need to send page response in the 2G/3G network, promptly send page response to BSC/RNC.

Step S710, BSC/RNC transmits page response to eMSC.

In the embodiment of the invention, do not exist under the Z2 interface case, by calling user in the EPS network, the user responds paging in Legacy EPS network, makes no matter network side has circuit domain business or data service, can paging also be user's service to the user.If the EPS network is not supported circuit domain business, allow the user return legacy EPS network response paging, thereby reach the purpose of calling user.

As shown in Figure 8, for the embodiment of the invention five eMSC simultaneously at EPS and Legacy EPS network calling user flow chart simultaneously, when subscriber equipment is registered simultaneously at 2G/3G network and EPS network, and in the 2G/3G network, the user does not utilize the Gs interface of SGSN to be registered on the eMSC, when then eMSC sent the paging request, passage was that the paging request is handed down to MME with the form of signaling by the Z2 interface, another passage with the form of signaling 2G/3G ICQ user; EMSC initiates simultaneously in EPS and 2G/3G ICQ user's flow process.

The present embodiment flow process is different with above-mentioned fact Example to be: the user is at Legacy EPS network and EPS network while calling user, need the paging request is handled in two networks simultaneously, the network of relation indication information element indication user equipment (UE) that carries in the paging request that the EPS network is received as the user sends page response at the 2G/3G network, then user equipment (UE) need be got back to and finish page response processing (as the induction method that echoes among the embodiment one) in the 2G/3G network, answer message if need to echo then directly send page response (as the induction method that echoes among the embodiment two) in EPS in the EPS network, the network indication information element that carries in this paging request can comprise that being but being not limited to is the network title indication of page response, the network capabilities indication, all can characterize cell or the message that the user gets back to particular network response paging the source indication Gs like of paging request etc.

After eMSC receives service request (PS or CS business), judge that this user equipment (UE) needs respectively from EPS network and 2G/3G network attachment then to need at two networks user equipment (UE) being carried out paging respectively and to handle to the CS territory.Therefore eMSC sends the paging request simultaneously, and concrete steps are as follows:

Step S801, user equipment (UE) send page response by the network indication information element indication user equipment (UE) that carries in the paging request at the 2G/3G network or at the EPS network Legacy EPS ICQ user (promptly initiating paging to BSC/RNC).

EMSC directly sends to BSC/RNC with the paging request, carries the network indication information element in this paging request, and network indication information element cell can comprise the paging reason, network domains indication or the like.

Step S802, BSC/RNC sends to all user equipment (UE)s in all registered location zones by eNodeB with this paging request, in network (2G/3G or EPS decide according to the network indication information element), send page response by the network indication information element indication user equipment (UE) that carries in the paging request.

Step S803, after user equipment (UE) is received the paging request of eNodeB transmission, check the network indication information element that carries in the message, this message indication UE forwards the 2G/3G network to and sends page response, be that UE sends page response to BSC/RNC, (it is example that present embodiment sends page response with user equipment (UE) at the 2G/3G network).

Step S804, BSC/RNC sends to eMSC with this page response.

Step S803 is identical with the method for transmission page response among step S804 flow process and the embodiment one, if network indication information element indication user equipment (UE) need arrive the EPS network and send page response, user equipment (UE) sends page response (this method is with embodiment two step S510) by eNodeB～MME～eMSC so.

Step S805, owing to initiate paging simultaneously at Legacy EPS network and eMSC, this step is that the user initiates the paging request at the EPS network, the MME of eMSC in the EPS network sends the paging request.

The flow process of calling user is with paging method among the embodiment one in the EPS network.

Step S806, when user equipment (UE) when the EPS network is in the Active state of activation, MME directly sends to user equipment (UE) with the indication of NAS beep-page message, carry network indication information element (network indication information element indication subscriber equipment sends page response at that network, judges at that network according to professional and network environment to send page response) in this NAS beep-page message indication.

Step S807, when user equipment (UE) when the EPS network is in the idle idle condition, MME sends to all user Equipment UE in the eNodB area of coverage by eNodB with this paging request, comes calling user.

After step S808, user equipment (UE) receive the paging request of eNodeB transmission, check the network indication information element that carries in the paging request, finish paging if network indication information element indication user equipment (UE) forwards the 2G/3G network to.Be that network equipment UE sends page response to BSC/RNC.

Step S809, BSC/RNC is transmitted to eMSC with this paging request.

If network indication information element indication user need arrive page response in the EPS network, user equipment (UE) can carry out page response (this method is with embodiment two step S510) by eNodeB～MME～eMSC so.

In the present embodiment, initiate paging and initiate the problem that paging does not have (comprising user's processing under the Active state at idle state and user) sequencing, can initiate paging simultaneously at Legacy EPS network at the EPS network.

In the embodiment of the invention, eMSC issues MME in EPS network by the Z2 interface with described paging request with means of signaling, indicates described MME calling user; EMSC issues Legacy EPS network with means of signaling with described paging request, and calling user in described Legacy EPS network makes no matter network side has circuit domain business or data service, can paging also be user's service to the user also.If the EPS network is not supported circuit domain business, allow the user return legacy EPS network response paging, thereby reach the purpose of calling user.

As shown in Figure 9, for the embodiment of the invention 6 at EPS and Legacy EPS network calling user flow chart simultaneously, in the present embodiment, user equipment (UE) is registered simultaneously at 2G/3G network and EPS network, and be not registered to the CS territory by the GS interface, when then eMSC received the paging request, a kind of data transfer mode sent to SGW with the form of packet by PGW with the paging request when EPS ICQ user; Another kind of communication mode is that form with signaling is at 2G/3G network (LegacyEPS network) calling user, network side eMSC is when EPS ICQ user, owing to do not exist the GS interface so in the EPS network during calling user, when the distributing paging request message, pass through PGW with the form of packet, SGW is transmitted to user equipment (UE), when user equipment (UE) sends page response, present embodiment with in the 2G/3G network, send page response be example (as need in the EPS network page response with page response process step S510 among the embodiment two or step S511), concrete steps are as follows:

Step S901, the user is Legacy EPS ICQ user, and promptly eMSC directly sends to BSC/RNC with the paging request, sends page response by the network indication information element indication user equipment (UE) that carries in the paging request at the 2G/3G network or at the EPS network.

Step S902, BSC/RNC sends to all by eNodeB with this paging request and covers all user equipment (UE)s of registering in the band of position, indicates this user equipment (UE) to send page response in network (2G/3G or EPS) by the network indication information element.

After step S903, user equipment (UE) receive the paging request of eNodeB transmission, check the network indication information element that carries in the paging request, this network indication information element indication user equipment (UE) forwards the 2G/3G network to and sends page response.Be that user equipment (UE) sends page response to BSC/RNC.

Step S904, BSC/RNC is transmitted to eMSC with this page response.

Wherein step S903 is that user equipment (UE) sends page response flow process (identical with page response flow process among the embodiment one) in the 2G/3G network with step S904, if network indication information element indication user equipment (UE) needs to send page response in the EPS network, user equipment (UE) then sends page response (as embodiment two step S510) by eNodeB～MME～eMSC so.

Step S905, in the EPS network during calling user, eMSC breaks into the paging request under the form of packet and sends to SGW by PGW, carry the network indication information element in this paging request, this network indication information element is made different transmission page response according to the different conditions of user equipment (UE) in the EPS network and is handled (equally also can be in 2G/3G or EPS network page response, present embodiment is an example with page response in the 2G/3G network).

Step S906, when the user is under the Active state of activation, eMSC directly sends to user equipment (UE) (this paging request carries the network indication information element equally) by data surface with this paging request with the form that the paging request is packaged into packet.

Step S907, if the user is under the Idle idle condition, eMSC indicates with the form of packet the paging request and sends to PGW by downlink data, send to SGW by PGW again, the network indication information element that carries in this paging request can comprise paging reason or network domains indication, can also comprise the architected features indication of CSoPS etc. in this outer network indication information element, SGW sends to MME with this paging request, MME converts this packet paging request to means of signaling and sends to eNodeB, and eNodeB sends this paging request by the signaling connection to all user equipment (UE)s registered in the coverage.

Step S908, user equipment (UE) are after the paging request of receiving this data packet form, and the network indication information element indication user equipment (UE) that carries in the paging request needs page response in the 2G/3G network, and promptly user equipment (UE) sends page response to BSC/RNC.

Step S909, BSC/RNC is transmitted to eMSC with this page response.

(step S702～paging request transfer process was identical when S704) middle user was in the Idle state, and this moment, the paging request still carried the network indication information element, and indication user page response in the 2G/3G network with embodiment four for step S907 in the present embodiment.

In the embodiment of the invention, eMSC issues SGW with described paging request by PGW in the mode of packet, and sends to subscriber equipment by described SGW; EMSC issues Legacy EPS network with means of signaling with described paging request, and calling user in described Legacy EPS network makes no matter network side has circuit domain business or data service, can paging also be user's service to the user also.If the EPS network is not supported circuit domain business, allow the user return legacy EPS network response paging, thereby reach the purpose of calling user.

As shown in figure 10, for the embodiment of the invention seven at Legacy EPS and EPS network calling user flow chart simultaneously, if user equipment (UE) is registered simultaneously at Legacy EPS network and EPS network, and there is a Gs interface (interface between SGSN and the eMSC), and when eMSC has been supported in paging request generation, at EPS network and Legacy EPS network while calling user.In the present embodiment, owing to there is Gs interface, then have when EPS ICQ user so with signaling method calling user and two kinds of paging methods the paging request being issued with data packet form, concrete steps are as follows:

Step S1001, when eMSC receives the paging request, when Legacy EPS ICQ user, eMSC can send the paging request to SGSN, this flow process is specially: when needs carry out the CS business, MSC sends the paging request by Z2 interface and MME to UE, and UE forwards the 2G/3G network to and carries out page response, and finishes follow-up business and handle.

Step S1002, SGSN directly sends to BSC/RNC in the Legacy EPS network with this paging request, and CN Domain Indicator is designated as CS (in the present embodiment be example with CS).

Step S1003, BSC/RNC sends to sub-district in the compass of competency with the paging request, needs to carry indication information element in the paging request.

Step S1004, user equipment (UE) is judged by the network indication information element that carries in this paging request, and the CS territory that need get back among the Legacy EPS sends page response information, promptly sends page response to BSC/RNC.

Step S1005, BSC/RNC is transmitted to eMSC with this page response.

As eMSC during EPS ICQ user, a kind of mode is with means of signaling calling user (promptly identical with method among the embodiment one), and another mode is that eMSC comes calling user (identical with method among the embodiment three) with the form that the paging request is packaged into packet.In the present embodiment, send the paging request with the form of packet and come for example, do not have the sequencing relation EPS ICQ user's step and user in LegacyEPS ICQ user's flow process, concrete steps are as follows:

Step S1006, eMSC sends to SGW with the form that the call signaling bag is packaged into packet by PGW by IP tunnel, send to subscriber equipment by SGW, come calling user, the network indication information element that carries in this paging request can comprise the indication user equipment (UE) (also can be back the indication of EPS response paging at the indication information element that the 2G/3G network sends page response, present embodiment is an example with the 2G/3G network), the network indication information element can also comprise the reason of Paging, carry out speech business (CS class business) such as needs, perhaps carry out short message service etc.If the user is under the Idle idle condition, eMSC sends to PGW with the form that the paging request is packaged into packet by SGW, after PGW sends to MME with the paging request, by MME packet paging request is converted to signaling paging request again and comes calling user.MME passes through the request of means of signaling distributing paging to the eNodeB that is associated, and can comprise the indication of paging reason or network domains in the paging request, can also comprise the architected features indication of CSoPS etc. in this outer network indication information element.ENodeB sends this paging request by the signaling connection to all user equipment (UE)s in the compass of competency.If the user is under the Active state, eMSC directly sends to eNodeB by data surface with this paging request with the form that the paging request is packaged into packet.ENodeB sends to all users that registered at eNodeB with this paging request and sends this paging request, carries the network indication information element in this paging request.

Step S1007, user equipment (UE) learn by the network indication information element that carries in the paging request and need to send page response in the 2G/3G network, promptly send page response to BSC/RNC.BSC/RNC transmits this page response (no matter the user is in the sort of state, page responses in the 2G/3G network, present embodiment is an example with the information of answering that echoes, the same S1004 of this step, S1005) to eMSC in the 2G/3G network.

After the user receives page response, if the indication user equipment (UE) echoes in the EPS territory and answers in the paging request, then subsequent step is with step S1004, step S1005, then the user is in EPS network response paging, user equipment (UE) is with the form of packet (as step S511 among the embodiment two) response paging (user Idle or Active state all can), the user also has a kind of method with means of signaling response paging when the Idle state, the method of the page response of describing with embodiment two steps S502～S503 is identical, if user equipment (UE) is in the Active state at the EPS network, then user equipment (UE) can also be used means of signaling page response (as step S510 among the embodiment two) in the EPS network.

In the embodiment of the invention, eMSC issues SGW with described paging request by PGW in the mode of packet, and send to the user by described SGW, perhaps eMSC issues MME in EPS network by the Z2 interface with described paging request with means of signaling, indicates described MME calling user; EMSC issues SGSN with described paging request by Gs interface with means of signaling, issue in the Legacy EPS network by described SGSN, calling user in described Legacy EPS network, making no matter network side has circuit domain business or data service, can paging also be user's service to the user also.If the EPS network is not supported circuit domain business, allow the user return legacy EPS network response paging, thereby reach the purpose of calling user.

As shown in figure 11, be the embodiment of the invention eight, data distributing is given user equipment (UE), and the MME indication is at EPS network response paging flow chart, in the present embodiment, if in the EPS network, PGW has data distributing to give UE, but the user is in the 2G network at this moment, and this 2G network does not have PS to cover, so this moment, MME received the PS packet by eMSC notice UE switchback LTE network, concrete steps are as follows:

Step S1101, eMSC is issued to SGW with packet by PGW.

Step S1102, SGW find that the user is not an activated state, then notify the MME calling user, and MME learns the Legacy EPS network coverage that the user is in does not at present have PS to cover according to user's mobility information.

Step S1103, MME notice eMSC is at EPS and Legacy EPS network while calling user, and increase indication user returns the cell of EPS network reception packet or adds by the particular network indication information element and inform that eMSC indicates user equipment (UE) to return EPS network reception packet in the network indication information element of this paging request.

Step S1104, user are Legacy EPS ICQ user, and network equipment directly sends to the paging request BSC/RNC at Legacy EPS network.

Step S1105, BSC/RNC sends to all user equipment (UE)s in the eNodeB registered range with this paging request, and this paging request has increased indication ustomer premises access equipment UE than the network indication information element that carries in the previous paging request more and got back to the EPS network and receive the cell of packet or inform that by the particular network Indication message eMSC indication user returns the indication information element that the EPS network receives packet.

Step S1106, after user equipment (UE) receives this paging request, if user equipment (UE) is current just in the EPS network, then directly initiate Service Request flow process response paging, if current UE is positioned at the CS territory of 2G/3G network, then need to forward to earlier the EPS network, initiate ServiceRequest flow process response paging then.

Step S1101, step S1102, step S1107 step S1108, be to initiate the flow process (when the user is in the idle idle condition, can initiate simultaneously) of paging with the flow process of initiating paging at the 2G/3G network at the EPS network, network side according to network capabilities and user capability whether determine needs in Legacy EPS ICQ user at EPS network calling user simultaneously, if do not need, step S1101 then, step S1102, step S1107, step S1108 can omit.Wherein the network indication information element that carries of paging request requires UE to get back to the EPS network and sends page response.Idiographic flow is in the signaling transfer process of Idle state with user among the embodiment four.

After step S1109, user equipment (UE) receive the paging request, if user equipment (UE) is current in the EPS network, then directly initiate Service Request flow process response paging, if current UE is positioned at the CS territory of 2G/3G network, then need to forward to earlier the EPS network, initiate Service then

Request flow process response paging.

Step S1101, step S1110, step S1111, for the user initiates the flow process of paging (when the user is in the Active idle condition at the EPS network, can initiate simultaneously also can take place successively with the flow process of initiating paging at the 2G/3G network), same network side according to network capabilities and user capability whether determine needs in Legacy EPS ICQ user at EPS network calling user simultaneously, if do not need, then step S1101, step S1110, step S1111 can omit.Idiographic flow is in the signaling transfer process of activated state with user among the embodiment four.

MME can be earlier in the EPS ICQ, if not response of user equipment (UE) then by Z2 interface requirement eMSC paging in the CS of 2G, 3G network scope, and requires user equipment (UE) to get back to the EPS network to send it back response.MME also can pass through Z2 interface requirement eMSC paging in the CS of 2G, 3G network scope in the EPS ICQ, and requires user equipment (UE) to get back to EPS network response paging.In the present embodiment, the method for page response with among the embodiment two in the EPS network method of page response.

In the embodiment of the invention, when having data distributing, network side gives the user, when but the user is in LegacyEPS at present, accept data by requiring the user to return the EPS network, even make the user at Legacy EPS (not having PS to cover) network, will be handed down to the user when network side has data service, can paging also be user's service to the user also.

The embodiment of the invention also provides a kind of eMSC, inform that by the Z2 interface MME is EPS ICQ user, in the paging request that eMSC sends, beep-page message by signaling CN Domainindicator or Paging Cause indication user equipment (UE) at the CS territory page-response message of 2G/3G or indication user equipment (UE) at EPS ICQ response message.After eMSC received that the CS speech business is exhaled indication eventually, eMSC arrived the called subscriber with the roaming number that HLR obtains the called subscriber alternately by this number route paging.EMSC comprises as shown in figure 12: paging request generation unit 10, be used to generate the paging request, and comprise the network indication information element in the described paging request, be used for indicating described subscriber equipment still to return page response at Legacy EPS network at the EPS network; Paging determining unit 20 is used for determining described paging request is issued at least as one of lower network: the packet domain Legacy EPS network of the packet domain EPS network of evolution and succession; Paging unit 30 is used for the user of described network is carried out paging.

Paging unit 30 specifically comprises: the first paging subelement 31, be used for the Mobility Management Entity MME of EPS network being issued in described paging request with means of signaling, and indicate described MME calling user.Or

The second paging subelement 32 is used in the mode of packet the PGW of described paging request by the EPS network being sent to SGW, sends to the user by described SGW.Or

The 3rd paging subelement 33 is used for means of signaling the MME of EPS network being issued in described paging request, indicates described MME calling user; With means of signaling the LegacyEPS network is issued in described paging request, calling user in described Legacy EPS network.Or

The 4th paging subelement 34 is used in the mode of packet the PGW of described paging request by the EPS network being issued SGW, sends to the user by described SGW; With means of signaling Legacy EPS network is issued in described paging request, calling user in described Legacy EPS network.Or

The 5th paging subelement 35, be used for the PGW of described paging request by the EPS network being issued SGW in the mode of packet, send to the user by described SGW, perhaps MME in the EPS network is issued in described paging request, indicate described MME calling user with means of signaling; With means of signaling SGSN is issued in described paging request, issue in the Legacy EPS network, calling user in described Legacy EPS network by described SGSN.

The embodiment of the invention also provides a kind of MME, receive beep-page message from eMSC, send to user equipment (UE), MME can indicate UE to send page response in the CS territory by this network indication information element message informing eNodeB and still send page response at the EPS network.MME comprises as shown in figure 13: judging unit 100 is used to judge that subscriber equipment is in idle Idle state or activates the Active state; Paging unit 200 is used for when subscriber equipment is in idle Idle state, and MME comes calling user with the paging request that receives by all subscriber equipmenies that eNodeB sends in the Acceditation Area; When subscriber equipment was in activation Active state, MME came calling user by sending non access stratum NAS message to UE.

In the above inventive embodiments, no matter the user still is Legacy EPS network at the EPS network, and no matter network side has circuit domain business or data service, can paging serves to the user and for the user.If the EPS network is not supported circuit domain business, allow the user return legacy EPS network response paging, thereby reach the purpose of calling user.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (20)

1, a kind of method of calling user is characterized in that, may further comprise the steps:

The eMSC of mobile switching centre of evolution generates the paging request;

Definite described paging request is issued at least of described eMSC carried out paging as one of lower network and to the user: the packet domain Legacy EPS network of the packet domain EPS network of evolution and succession.

2, the method for claim 1 is characterized in that, comprises the network indication information element in the described paging request, is used for indicating described subscriber equipment still to return page response at Legacy EPS network at the EPS network.

As claim 1 or 2 described methods, it is characterized in that 3, definite described paging request is issued at least of described eMSC carried out paging as one of lower network and to the user: EPS network and Legacy EPS network comprise:

Described eMSC issues Mobility Management Entity MME in the EPS network with means of signaling with described paging request, indicates described MME calling user.

As claim 1 or 2 described methods, it is characterized in that 4, definite described paging request is issued at least of described eMSC carried out paging as one of lower network and to the user: EPS network and Legacy EPS network comprise:

Described eMSC sends to SGW with described paging request by the PGW in the EPS network in the mode of packet, sends to the user by described SGW.

As claim 1 or 2 described methods, it is characterized in that 5, definite described paging request is issued at least of described eMSC carried out paging as one of lower network and to the user: EPS network and Legacy EPS network comprise:

Described eMSC issues MME in the EPS network with means of signaling with described paging request, indicates described MME calling user;

Described eMSC issues Legacy EPS network with means of signaling with described paging request, calling user in described Legacy EPS network.

As claim 1 or 2 described methods, it is characterized in that 6, definite described paging request is issued at least of described eMSC carried out paging as one of lower network and to the user: EPS network and Legacy EPS network comprise:

Described eMSC issues SGW with described paging request by the PGW in the EPS network in the mode of packet, sends to the user by described SGW;

Described eMSC issues Legacy EPS network with means of signaling with described paging request, calling user in described Legacy EPS network.

As claim 1 or 2 described methods, it is characterized in that 7, definite described paging request is issued at least of described eMSC carried out paging as one of lower network and to the user: EPS network and Legacy EPS network comprise:

Described eMSC issues SGW with described paging request by the PGW in the EPS network in the mode of packet, send to the user by described SGW, perhaps described eMSC issues MME in the EPS network with means of signaling with described paging request, indicates described MME calling user;

Described eMSC issues SGSN with means of signaling with described paging request, is issued in the Legacy EPS network calling user in described Legacy EPS network by described SGSN.

As claim 3,5,7 described methods, it is characterized in that 8, the described MME calling user of described indication comprises:

When subscriber equipment was in idle Idle state, MME came calling user with the paging request that receives by all subscriber equipmenies that eNodeB sends in the Acceditation Area;

When subscriber equipment was in activation Active state, MME came calling user by sending non access stratum NAS message to UE.

9, as claim 4,6,7 described methods, it is characterized in that, describedly issue SGW, send to the user, comprising by SGW by PGW:

Described subscriber equipment is in the Idle state, and eMSC sends to PGW, SGW with the form of packet with the paging request, by described SGW the paging request is sent to the user; Perhaps

Described subscriber equipment is in the Active state, and eMSC sends to user by data surface with the paging request with the form of packet with the paging request.

10, as any described method of claim 3-7, it is characterized in that described subscriber equipment returns page response in Legacy EPS network.

11, as any described method of claim 3-7, it is characterized in that described subscriber equipment returns page response in the EPS network.

12, method as claimed in claim 2 is characterized in that, comprises also in the network indication information element of described paging request that MME indication eMSC returns the user to the cell that the EPS network receives packet.

13, method as claimed in claim 2 is characterized in that, comprises also in the described paging request that MME indication eMSC returns subscriber equipment to the network indication information element that the EPS network receives packet.

14, a kind of eMSC is characterized in that, comprising:

Paging request generation unit is used to generate the paging request, comprises the network indication information element in the described paging request, is used for indicating described subscriber equipment still to return page response at Legacy EPS network at the EPS network;

The paging determining unit is used for determining described paging request is issued at least as one of lower network: the packet domain Legacy EPS network of the packet domain EPS network of evolution and succession;

Paging unit is used for the user of described network is carried out paging.

15, as eMSC as described in the claim 14, it is characterized in that described paging unit specifically comprises:

The first paging subelement is used for means of signaling the Mobility Management Entity MME of EPS network being issued in described paging request, indicates described MME calling user.

16, as eMSC as described in the claim 14, it is characterized in that described paging unit specifically comprises:

The second paging subelement is used in the mode of packet the PGW of described paging request by the EPS network being sent to SGW, sends to the user by described SGW.

17, as eMSC as described in the claim 14, it is characterized in that described paging unit specifically comprises:

The 3rd paging subelement is used for means of signaling the MME of EPS network being issued in described paging request, indicates described MME calling user; With means of signaling the LegacyEPS network is issued in described paging request, calling user in described Legacy EPS network.

18, as eMSC as described in the claim 14, it is characterized in that described paging unit specifically comprises:

The 4th paging subelement is used in the mode of packet the PGW of described paging request by the EPS network being issued SGW, sends to the user by described SGW; With means of signaling Legacy EPS network is issued in described paging request, calling user in described Legacy EPS network.

19, as eMSC as described in the claim 14, it is characterized in that described paging unit specifically comprises:

The 5th paging subelement, be used for the PGW of described paging request by the EPS network being issued SGW in the mode of packet, send to the user by described SGW, perhaps MME in the EPS network is issued in described paging request, indicate described MME calling user with means of signaling; With means of signaling SGSN is issued in described paging request, issue in the Legacy EPS network, calling user in described Legacy EPS network by described SGSN.

20, a kind of MME is characterized in that, comprising:

Judging unit is used to judge that subscriber equipment is in idle Idle state or activates the Active state;

Paging unit is used for when subscriber equipment is in idle Idle state, and MME comes calling user with the paging request that receives by all subscriber equipmenies that eNodeB sends in the Acceditation Area; When subscriber equipment was in activation Active state, MME came calling user by sending non access stratum NAS message to UE.

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